got some m80's welded in after the x pipe, and it sounds basa$$!!
it is more quiet than the straight pipe, but has a better quality to it. deep, loud rumble. rather quiet on idle and regular driving, but hit the accellerator and Stangzilla roars with a purpose. check out these videos.
cold startup
mustang gt pypes mid mufflers cold start- Video
in car
YouTube - mustang gt exhaust take 9
drive by
Stangzilla does a driveby- Video